Telescopes around the world have spotted a monster radio jet streaming from a quasar dating back to the first 1 billion years of the universe. At double the width of our Milky Way galaxy, this jet of radio waves is the biggest ever detected so early in the history of the universe,

By revealing a massive radio jet in the early universe, J1601+3102 offers a rare snapshot of early quasar activity.

These jets become elusive the farther back in time astronomers try to look because of the so-called cosmic microwave background. The ancient radiation, the earliest fossil of light from 380,000 years after the Big Bang, tends to swamp out more subtle signals.